FS#12586 - Modify %ss to be able to use numbers for conditionals

i.e %?ss(1,1,%cM)<|one|two|three|...|> or %xd(numbers, %ss(1,1%cM)

Change-Id: I74ecb3f253f3be1fd270f75c0ef79addd364a7de

3 files changed, 9 insertions, 0 deletions

diff --git a/apps/gui/skin_engine/skin_parser.c b/apps/gui/skin_engine/skin_parser.c
index 3899f605f3..340cbbdb01 100644
--- a/apps/gui/skin_engine/skin_parser.c
+++ b/apps/gui/skin_engine/skin_parser.c
@@ -824,6 +824,10 @@ static int parse_substring_tag(struct skin_element* element,
     else
         ss->length = get_param(element, 1)->data.number;
     ss->token = get_param_code(element, 2)->data;
+    if (element->params_count > 3)
+        ss->expect_number = !strcmp(get_param_text(element, 3), "number");
+    else
+        ss->expect_number = false;
     token->value.data = PTRTOSKINOFFSET(skin_buffer, ss);
     return 0;
 }
diff --git a/apps/gui/skin_engine/skin_tokens.c b/apps/gui/skin_engine/skin_tokens.c
index 82d96f6993..765102513a 100644
--- a/apps/gui/skin_engine/skin_tokens.c
+++ b/apps/gui/skin_engine/skin_tokens.c
@@ -942,6 +942,10 @@ const char *get_token_value(struct gui_wps *gwps,
                     buf = &buf[start_byte];
 
                 buf[byte_len] = '\0';
+                if (ss->expect_number &&
+                    intval && (buf[0] >= '0' && buf[0] <= '9'))
+                    *intval = atoi(buf) + 1; /* so 0 is the first item */
+                    
                 return buf;
             }
             return NULL;
diff --git a/apps/gui/skin_engine/wps_internals.h b/apps/gui/skin_engine/wps_internals.h
index 9c3fa1b5bc..c55c8d2515 100644
--- a/apps/gui/skin_engine/wps_internals.h
+++ b/apps/gui/skin_engine/wps_internals.h
@@ -286,6 +286,7 @@ struct logical_if {
 struct substring {
     int start;
     int length;
+    bool expect_number;
     OFFSETTYPE(struct wps_token *) token;
 };